.app {
  padding-top: 1rem;
}
.index {
  background-color: rgba(0, 0, 0, 0.1);
  min-height: 100vh;
}
.index footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100vw;
  height: 1rem;
  border-top: 1px solid #ccc;
  display: flex;
}
.index footer a {
  flex: 1;
  text-align: center;
  padding-top: 0.2rem;
}
.index footer a i {
  font-size: 0.4rem;
}
.index footer .active i,
.index footer .active div {
  color: #ff4400;
}
